JoAnna M.

asked • 10/19/22

-10x+8y=-18 -2x+16y=-18

solve by elimination

Doug C.

JoAnna, have you given this a try? What are you not understanding?
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10/19/22

JoAnna M.

yes i gave it a try and i didnt get it
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10/20/22

1 Expert Answer

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Hosea M. answered • 10/19/22

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We have the following:

-10x+8y=-18

-2x+16y=-18

We eliminate x to remain with y

(-10x+8y=-18)-2

(-2x+16y=-18)-10


20x-16y=36

20x-160y=180

0+144y=-144


So, 144y=-144

y=-1

Now, we replace y with -1 in the first equations to get x

-10x+8y=-18, but y=-1

-10x+8(-1)=-18

-10x=-10

x=1


Hence, x=1, y=-1


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JoAnna M.

thank you so much that helped me a lot
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10/20/22

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